Reza Vafaee1, Nahid Safari-Alighiarloo2, Zahra Razzaghi3, Mojtaba Ansari4, Mohammad Rostami Nejad5, Mostafa Hamdieh6, Vahid Mansouri7. 1. Critical Care Quality Improvement Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 2. Endocrine Research Center, Institute of Endocrinology and Metabolism, Iran University of Medical Sciences, Tehran, Iran. 3. Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 4. Faculty of Medicine, Imam Hosein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 5. Research Institute for Gastroenterology and Liver Diseases, Gastroenterology and Liver Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 6. Department of Psychosomatic, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran. 7. Proteomics Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract
Introduction: The reversibility of biological processes is an important challenge in the study of environmental pollutants and also natural and artificial radiation. There are many pieces of evidence about the reversible and irreversible effects of UV radiation on the human body. Assessment of the reversibility of UV laser effects on Saccharomyces cerevisiae was the aim of this study. Methods: Gene expression alteration in S. cerevisiae samples radiated by a 30s UV laser for 15, 30, and 60 minutes post-radiation times were investigated via network analysis to explore time-dependent reversible alteration in the gene expression profiles of the samples. Results: 19 differentially expressed genes (DEGs) were identified as targeted genes for the samples which were harvested 60 minutes after radiation; network analysis revealed no significant alteration in biological processes. Conclusion: It can be concluded that the gross effects of the UV laser on S. cerevisiae samples disappear after 60 minutes of radiation.
Introduction: The reversibility of biological processes is an important challenge in the study of environmental pollutants and also natural and artificial radiation. There are many pieces of evidence about the reversible and irreversible effects of UV radiation on the human body. Assessment of the reversibility of UV laser effects on Saccharomyces cerevisiae was the aim of this study. Methods: Gene expression alteration in S. cerevisiae samples radiated by a 30s UV laser for 15, 30, and 60 minutes post-radiation times were investigated via network analysis to explore time-dependent reversible alteration in the gene expression profiles of the samples. Results: 19 differentially expressed genes (DEGs) were identified as targeted genes for the samples which were harvested 60 minutes after radiation; network analysis revealed no significant alteration in biological processes. Conclusion: It can be concluded that the gross effects of the UV laser on S. cerevisiae samples disappear after 60 minutes of radiation.